In the given code snippet, what type of member function is get$\_$data$()?$

class Building

$\{$

public:

void get$\_$data$()$ const;

private:

double height;

double no$\_$stories;

$\}$;

void Building::get$\_$data$()$ const

$\{$

cout $<<$ height $<<$ endl;

cout $<<$ no$\_$stories $<<$ endl;

$\}$